R. Zafarani, and H. Liu. Proceedings of the 19th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 41--49. New York, NY, USA, ACM, (2013)
J. Tang, S. Chang, C. Aggarwal, and H. Liu. Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, page 87--96. New York, NY, USA, ACM, (2015)